I started with Mushoku Tensei. Just as you, watched the anime, loved it, and heard amazing things about the LN. And you already know the rest. Now I'm just waiting for the next volumes to be translated so I can buy them.

My interest started with SAO and started with them. But dropped them when I finished mushoku s anime and went all in.

Prefer digital copy, using my e-reader for them. Only buy a few physical copies and only of books I have already read

Been enjoying using my Boox Nova Air that connects to my Kavita through Moon Reader+. I just download my epub or PDF to read. That flow has been working like a charm to me.

Keep in mind that it's an e-reader, so it's black and white only. May be fine with you or you may want an iPad or an Android tablet for color and speed

EDIT

Have read also from my Kindle and Kobo library as it is an Android device and have both apps downloaded